The mystery behind L’Wren Scott’s tragic suicide deepened Wednesday, as the designer’s newly revealed will shows she wasn’t drowning in money woes when she took her own life last week — but was instead sitting on a $9 millionfortune.

Although reports indicated Scott’s design business, LS Fashion Ltd., was $5.9 million in the red, her will bequeathed her $8 million condo, which she owned under a corporate name, to the love of her life, Mick Jagger.

The sexy ex-model also left the already ultra-rich Rolling Stones frontman — who had allegedly dumped her — a $1 million trove of other valuables.

Her family, meanwhile, got nothing.

“I give all my jewelry, clothing, household furniture and furnishings, personal automobiles and other tangible articles of a personal nature … to Michael Philip Jagger,” Scott’s will says, according to court papers reviewed by The Post Wednesday.

Details of the will were first reported by PageSix.com.

Scott, 49, signed the documents in Beverly Hills on May 23, 2013, which is before Jagger is believed to have ended his romance with her.

Before the will could be submitted for approval by the Manhattan probate court, her attorneys had to swear that her assets were legitimately worth at least $9 million.

The acclaimed fashion designer took her own life on March 17 by hanging herself from a balcony door handle with a black satin scarf.

Scott took a final parting shot at her siblings by specifically stating in the will that she didn’t want her family to get a dime.

“Except if otherwise provided in this will, I have intentionally omitted to provide herein for any of my heirs living at the date of my death,” wrote Scott, who hadn’t spoken to her older sister, Jane Shane, 53, of Sandy, Utah, for six years.

In New York state, legal heirs include spouses and living relatives.

It’s unclear why Scott would have cut out older brother Randall Bambrough, 58, who is her only living family member other than Shane. He was named co-head of her company just last year.

In one odd twist, Scott mistakenly wrote in her will that “I have never been married. I have no children,” even though she was briefly married in the 1990s. She crossed out “never.”

Her attorneys did not return calls for comment. Her siblings also did not return messages.